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Warmer Pliocene Upwelling Site SST Leads to Wetter Subtropical Coastal Areas: A Positive Feedback on SST
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2022
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Source: Paleoceanography and Paleoclimatology, 37(2)
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Journal Title:Paleoceanography and Paleoclimatology
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Description:The early-to mid-Pliocene (5.3–3 Ma), characterized by warmer temperatures and similar CO2 concentrations to present day, is considered a useful analog for future warming scenarios. Geological evidence suggests that during the Pliocene, many modern-day desert regions received higher levels of rainfall and supported large perennial lakes and wetter vegetation types. These wetter conditions have been difficult to reconcile with model predictions of 21st century drying over most subtropical land regions. Using an atmospheric General Circulation Model, we show that underestimates of Pliocene rainfall over certain areas in models may be related to insufficient sea surface temperature (SST) warmth simulated over relatively local
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Source:Paleoceanography and Paleoclimatology, 37(2)
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ISSN:2572-4517;2572-4525;
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Rights Information:Other
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Compliance:Library
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